Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
295536 (2008 RD138)
Classification: Main-belt Asteroid          SPK-ID: 2295536
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1120283507505718 6.3982e-08  
a 3.041372376495567 3.7735e-08 au
q 2.700652445138421 1.8694e-07 au
i 8.759273876183546 5.7396e-06 deg
node 271.7927877976555 3.5395e-05 deg
peri 30.81932874852414 4.4041e-05 deg
M 128.1702025110768 2.5141e-05 deg
tp 2458310.756856058298
(2018-Jul-11.25685606)
0.00013592 TDB
period 1937.326515478927
5.30
3.6055e-05
9.871e-08
d
yr
n .1858230902863601 3.4583e-09 deg/d
Q 3.382092307852712 4.1962e-08 au
  Orbit Determination Parameters
   # obs. used (total)      254  
   data-arc span      5944 days (16.27 yr)  
   first obs. used      2003-10-16  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52821  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 16:40:45  

Additional Information
 Earth MOID = 1.68942 au 
 Jupiter MOID = 1.82216 au 
 T_jup = 3.213 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457464.5 (2016-Mar-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1143604272339455 6.4449e-08  
q 2.692975259935235 1.8955e-07 au
tp 2458306.481244124555
(2018-Jul-06.98124412)
0.00013235 TDB
node 272.0619913991385 3.5443e-05 deg
peri 29.93136277840188 4.3597e-05 deg
i 8.755074062007429 5.7357e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      254  
   data-arc span      5944 days (16.27 yr)  
   first obs. used      2003-10-16  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52821  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 16:40:45  

Additional Information
 Jupiter MOID = 1.82216 au 
 T_jup = 3.213 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.153711540476866E-15 -1.204466981166408E-14 5.264573036513928E-14 5.442111948765585E-15 -2.573419010901734E-13 1.276665061168247E-15
q -1.204466981166408E-14 3.592742278523581E-14 -4.523456552079515E-13 -1.218541057988295E-14 6.046617135749645E-13 -1.426856050898718E-15
tp 5.264573036513928E-14 -4.523456552079515E-13 1.751622366828691E-8 -2.996845955378635E-11 3.333296843104052E-9 -6.968705314395688E-12
node 5.442111948765585E-15 -1.218541057988295E-14 -2.996845955378635E-11 1.256215221670645E-9 -1.247418245140034E-9 -1.658473365393565E-11
peri -2.573419010901734E-13 6.046617135749645E-13 3.333296843104052E-9 -1.247418245140034E-9 1.900718356864665E-9 1.458085321143609E-11
i 1.276665061168247E-15 -1.426856050898718E-15 -6.968705314395688E-12 -1.658473365393565E-11 1.458085321143609E-11 3.289780140220369E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO455184  

295536 (2008 RD138)          Discovered 2008-Sep-06 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-03 20:44 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin